Horizon gyro



lf'eb. 19, 1946. B. G. CARLSON HORIZON GYRO Filed Sept. 24, 1942 IN V EN TOR.

551W 6% 6390mm BY I HTI'G/F/VE Y Potented Feb. 1 9, 1946 HORIZON GYBO mm o. Carlson, Erleside, Ohio, asslgnor to Jack 1b Heintz, lnc., Redford, Ohio, a corporation of Ohio Application September 24, 1942, Serial No 459,582

Z'Olaims.

This invention relates in general to horizon gyros and more particularly to improvements in the erection pendulums for effecting the erection thereof and has as one of its primary objects the provision of a simple expedient whereby the length of swing of the erection pendulums may he easily and readily adjusted to vary their eflectiveness in meterlril the air ports that they control.

With the foregoing and other objects in view, the invention resides in the combination of ports end the details of construction herelnolter set lorth lo the lollowlrle specification and mopemled elellns, certelri. embodiments thereof heiug llluslo the occomoonying drawing, lo which:

Figure l is er view portly in elevation our}: portlo to of en horizon euro elssemhly orltl ltc 3 end ll to o vlew in section telreu olooe line Figure l showirie the plate edluotuhly heut portions to constitute llooltine stops tor the erection llenelulums.

ltelerrloo: more oortleularlv to the drawing, the horioorl illoludes the oonverrtlorlol slur hot time t eorwlhzr rotor cosine ll mounted for uolversol movement. gimhal ring l is pro-- rrloleu lvlth to pole of truriuloris 3 to so horlson hole ol on outomotie pilot. or the @osirlg ls olvotolly suosorteol in slmhol rlue t For o1? truonious l and hearing assemblies oucl cools-loo therewitluo on air let for driving the spinning rotor l, shown in dotted lines, about u oorrriollw-vertlool spin axis V allollt the con verltlouol usher end lower trurmlons and hearing ossemhlles, not shown. Surrounding the lower heoltnu extending downwardly is a hex t eonstltutll'ls an extending of casino 2.

ll; is to he understood thot the horizon host 22, within which the euro rotor l is suspended, is coutluuouslv exhausted of air in the eorrveotional monster. Lllrewlw, suitehle conventional air oessuues ore provlded tor the admission of ale from outside the casing 2 leading to theair jet Alter rlolne the work of spinning" the rotor the pressure oil" mosses from hots l throueh suitable passages into hon ll from which it escapes into rarefied otmosphere ol the hex through parts ll, ltl, ll and it which ore directed parallel to each of the elmhol axes in hoth dlrectlons.

The c is substantially non-pendulous but has imparted thereto gravitational control in such. o manner as to directly reduce inclination. Thls gravitational control is exerted by controlline of air jets from parts t, it, ill and it by me of small light stirrup-shaped. erection pendulums l3 and I4 with openings such as shown at l5 therein to register with parts 9, It, II and t2, the arrangement being such that the openings normally uncover half of each port in the manner shown. Any movement of the erection pendulum it tends to partially close one port 9 and equally open the other port it and the sameis true with respect to pendulum it and the ports lll and lil that it regulates. Any inclination of the gyro from the true gravitational vertical results in o. corresponding movement of pendulums end l t to increase the size of the 1 air let on one side of the hex and simultaneously and correspondingly reduce the size end strength of the air let on the opposite side oi the "ooze. This restores the vertleol oosltlonol the rotor casing through precession in the well known manner.

ome means should he employed to lunction. as stops for limiting the swing oi. these erection pendulurns whether goe'odulums are designed to completely or only" partially close the ports they regulate. En the present preferred emhodiment it is the intent to have the erection perldw llll lums act as tlllltllfly as possible for their lntended.

purpose and. not merely to meter the air jet. The stops ore therefore designed to render all of the ports at least oertlully open at all times and thus the llmltlne stores are so err-eluted with respect to the pendulums and the relative alignment of the pendulum openings and the hon ports that none ol the ports ore 'l'ully closed out our time.

Moreover, an important expedient in aceomplishlng thls relationship there to provided. instead of a fixed constructional series of limiting stops, o series of easily end reedilv adjustable stops. These are in the form of malleable metallie heut-up portions t ll,- Zlll, and. t ll struck up from. ears ll, it, til and. ll of the hon bottom plate l6. its shown, the greater. extent to which each stop is physically bent up or struck up from its adjacent horizontal ear the greater are of pendulum swing is eilorded. It can easily be appreciated that fineness of adjustment to available by reason of thls system of adjustment and the ease of adjustment during test of pendulum swing even after complete assembly and without the necessity of disassembling the structure or any part thereof.

lclaim: 1. In a gyro vertical for aircraft having a a downward extending hollow air box having a hottom plate of malleable metal and provided with Vertically e d g narrow slots in its side walls. a plurality of ball typ Pendulous gyro erecting shutters for regulating the escape of air from said air box and adjustable stops for limiting the swing of said'pendulous shutters in either direction, said stops comprising adjustably bentup portions of the bottom late of said air box to engage the gyro erecting shutters to permit but limit the extent of swing thereof.

2. In a gyro vertical for aircraft having a downward extending hollow air box having a bottom plate of malleable metal and provided with vertically extending narrow slots in its side walls, a plurality of bail type pendulous gyro erecting shutters for regulating the escape of air from said air box and adiustable stops for limiting the swing of said pendulous shutters in either direction, said stops comprising ears formed on said bottom plate beyond the limits of the closure area thereof and adjustably bent up to a predetermined degree to be engaged by said erecting shutters to permit but limit the extent of swing 10 thereof.

BERT G. CARLSON. 

